Real-Time Clock (Rtc) Advisories; Rtc_3; Rtc Interrupts Are Perceived By The User As Happening One Second Before; Rtc_4 - Texas Instruments TMS320VC5509A Manual

TMS320VC5509A Silicon Errata
3.7

Real-Time Clock (RTC) Advisories

Advisory RTC_3
Revision(s) Affected:
Details:
Assembler Notification: None
Workaround:
Advisory RTC_4
Revision(s) Affected:
Details:
Assembler Notification: None
Workaround:

RTC Interrupts are Perceived by the User as Happening One Second Before

1.0 and 1.1
When the user reads the Real Time Clock time register, these register are read one second
after the RTC's internal timer counter register. The RTC interrupts are triggered by the internal
counter register, thus it seems to the user that the interrupt was triggered one second earlier.
For example, an alarm set to every minute alarm generates an interrupt at xx:xx:59 instead of
xx:xx:00.
Take into account the one second difference when using the alarm interrupt.
1.0 and 1.1
Since the year can be varied from 00−99 only, any year ending with 00 will always appear as a
Leap Year, which is not always the case. For example, 2100 ends in 00 and is not a Leap
Year.
None

Any Year Ending in 00 Will Appear as a Leap Year

SPRZ200E
20